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CVE-2026-40037

CVE-2026-40037 · OpenClaw < 2026.3.31 - Unsafe Request Body Replay via fetchWithSsrFGuard Cross-Origin Redirects

This page contains facts from public vulnerability sources. Check the original advisory before updating.

OpenClaw before 2026.3.31 (patched in 2026.4.8) contains a request body replay vulnerability in fetchWithSsrFGuard that allows unsafe request bodies to be resent across cross-origin redirects. Attackers can exploit this by triggering redirects to exfiltrate sensitive request data or headers to unintended origins.

CVSS 7.1 · High · EPSS 0.3% · Fix available

Published
Updated

Stack: node

Affected products and versions

  • openclaw

    Versions
    • ≥ 0, < 2026.4.8: Affected (semver)
    • 2026.4.8: Not affected (semver)

    Update to 2026.4.8

  • openclaw npm

    Affected ranges
    • SEMVER: < 2026.4.8

    Update to 2026.4.8

Original sources

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